【作者】 赵亮；

【导师】 徐爱功；

【作者基本信息】 辽宁工程技术大学 ， 大地测量学与测量工程， 2013， 硕士

【摘要】 现代化后的美国GPS，俄罗斯的GLONASS、中国的COMPASS以及欧洲的Galileo等全球卫星导航系统均设计采用多个频率，多频信号可以形成更多具有优良特性的数据组合，为载波相位的周跳探测提供了更多选择。本文在单频和双频周跳探测与修复方法研究的基础之上，基于三频数据能形成长波长、消电离层/弱电离层、低噪声等优良特性的组合，对GNSS现代化后的三频周跳探测与修复提出了两种新的方法：选取两组相位无几何距离组合(-1,-1,2)和(-1,4,-3),在200周内可以探测出除敏感周跳外的所有周跳，但探测出的组合周跳值不能固定为整数，也无法进行基础载波上的周跳值分离，用一个三阶多项式拟合L1、L2和L5的频间单差值，这四组方程按照间接平差原理，可以探测出各个频率上大于或等于1周的周跳，这种方法适用于高采样率下的周跳探测；基于相位减伪距组合周跳探测的原理，提出了一种三频组合周跳检测量的优选方法，并利用该方法在不同伪距测量噪声情况下，选取3个最优的线性无关相位组合，组合检验量可以准确探测出各个频率上大于或等于1周的周跳。对IGS网站L5NetR8Test测试站的三频原始观测数据进行周跳探测，采样间隔为15s，未发现周跳，分别加入模拟的大周跳、小周跳和不敏感周跳或特殊周跳，两种方法均正确探测出了模拟周跳。相位无几何距离组合最多形成两组线性无关的组合，由于15s采样间隔多项式拟合频间单差误差最大可达0.6周，可能会引起取整错误。三频相位减伪距组合的周跳估值标准差为0.2周左右，即使在伪距测量噪声为3m的情况下，仍然能以95.5%的概率对组合周跳取整成功。更多还原

【Abstract】 Future global navigation satellite system (GNSS), such as the US modernized globalpositioning system(GPS),the Russian GLONASS system, the China COMPASS system and theEuropean Galileo system, will all operate with three or more frequencies, owing tomulti-frequency data, more data combinations with superior property are available for cycle slipdetection. In this paper, on the basis of researching single and dual frequency cycle slip detectionand repair methods, based on triple frequency data can form more combinations with excellentproperties，such as long wavelength、ionosphere free or low ionosphere and low noise, putsforward two new methods for the modernized GNSS cycle slip detection: By choosing twogroups of geometry-free phase combinations (-1,-1,2) and (-1,4,-3), we can detect all cycle slipsexcept sensitive cycle slips in200cycle, but the combined cycle slips value can not be fixed toan integer, the cycle slips on the basis of carrier can not be separated also，with a third-orderpolynomial fitting to single difference in frequency ofL1、L2andL5, these four sets of equationsin accordance with the principle of indirect adjustment, could effectively detect cycle slips smallto one cycle at every frequency, this method is suitable for high sampling rates cycle slipdetection; A method for optimal selection of the triple-frequency combination test quantities isinvestigated based on the theory of phase minus pseudorange combination for cycle slipdetection, three linear independent carrier phase combinations are selected in the case ofdifferent pseudorange measurement noises, the combination test quantities can accurately detectcycle slip small to one cycle at every frequency.Detecting the cycle slip of original observation data of L5NetR8Test station in IGSwebsite,found no cycle slip, the sampling interval is15s, adding simulated big cycle slip、smallcycle slip and special cycle slip or insensitive cycle, both the two methods detected the cycleslips correctly. Only up to two sets of linearly independent combinations are formed bygeometry-free phase combination, due to the error of polynomial fitting to single difference infrequency of15s sampling rates is up to0.6cycle, sometimes may cause rounding errors. Thetriple phase minus pseudorange combination with the cycle slip valuation standard deviation ofabout0.2cycle, even though under condition of3meters standard deviation of pseudo-range, thecombined cycle slip can still be rounded success probability of95.5%.更多还原